Question

help find length of ac n explain please thanks

Answer 1

Answer:

AC = 12.5 cm

Step-by-step explanation:

use cosine law c^2 = a^2 + b^2 − 2ab cos(C)

c^2 = 6^2 + 10^2 - 2(6)(10)(cosin100)

c^2 = 156.84

c= √156.84

c= 12.5 cm

The cosine rule is used when we are given either three sides or two sides and the included angle.

Answer 2

Answer:

11.66 which is approximately 12

Step-by-step explanation:

by using Pythagoras method

$a^{2}+b^{2}=c^{2} because c is the hypotenuse$  

$6^{2}+10^{2}=c^{2}$

$36+100=c^{2}$

$136=c^{2}$

$\sqrt{136}=\sqrt{c}$

$c=11.66$